Weiss



EEICE.

PATENT ALBREGHT SCHOENEWEISS, OF ISERLOHN, GERMANY.

NEEDLE-GRINDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 596,184, dated December 28, 1897.

Application filed February 23|1897. Serial No. 624,5 50. l(No model.) Patented in Germany January 30,1896,No. 90,705; in Y England October 13, 189,6, No. 22,712, and in France December 8, 1896, No. 259,072.

To a/ZZ whom it may cancer/:

Be it known that 1, ALBRECHT SCHOENE- WEISS, a citizen of the Kingdom of Prussia,

'seams or fiat burs therefrom.

The machine consists of a revolving feedroller provided along its circumference with grooves into which the needles fall from a receptacle and having its 'periphery parallel and adjacent to the surface of an endless belt supported upon rollers and held to travel in close proximity to a horizontal plane over which the needles are moved. The feed-roller delivers the needles to the belt opposite the beltsupporting rolleigand the needles are then seized and carried along to the belt, receiving a rolling motion therefrom, and the heads and eyes of the needles projecting slightly beyond the belt are held and revolved in contact with a grinding-wheel, by means of which the seams are ground off and the heads and eyes are dressed.

In the accompanying drawings, Figure 1 is a transverse sectional elevation in the line of movement of the belt; Fig. 2, a longitudinal sectional elevation in the line of axis of the main belt-pulley; Fig. 3, asectional elevationV in the axis of the feed-roller and casing; Fig. 4, a sectional elevation of one end of the baseplate, as shown in Fig. 1, upon an enlarged scale; Fig. 5, a longitudinal section across the feed-belts, showing a modification for carrying a row of double needles; Fig. 6, a View vsimilar to that shown in Fig. 5 and illustrating a second modification for carrying two separate rows of needles; Fig. 7, a view of a single needle having an eye-seam before grinding; Fig. 8, a similar view of a double needle or needle-blank before grinding, and Fig. 9 an enlarged view of a fragment of a grinding- Wheel and of the eye end of a needle While the latter is being' ground.

The single-row machine is shown in Figs. 1 to 4C,inclusive,and comprises two end fra'rnestandards A A', supporting a bed-frame B, bolted thereto, upon which are secured pedestalsD D, connected bya cross-bridge D, for supporting the shafts of the feed-belt pulleys E E' E2 and of the feed-roller F,and upon which is also secured a cross-bar G and standards G G2, which support the vertical spindle h of a grin ding-wheel H, which latter is thus held to revolve with its upper or grinding face in the same plane with the feed-belt I, carried by the pulleys E, E', and E2, and which is also adjustable both vertically and horizontally at one end, as shown in Figs. 1 and 2, or in any convenient known way,forcompensating for any inaccuracy of construction from unequal eXpansion or from other causes, so that the needle-heads coming on their way in contact with the rim of the grinding-wheel will be dressed as desired.

The main feed-belt pulley E is fitted with a pivot-bearing shaft e, supported in pivotblocks e, each held between clamping-blocks e2 by set-screws e3, which admit of the longitudinall adjustment of said blocks to hold the pulley truly in place. The small guide-pulleys E E2 carry the belt and hold it to run in a horizontal plane below the main drivingy pulley E and in close proximity to a race or track block K, over which the needles are carried by the belt I. The guide-pulleys on the belt are made of less width than the feedroller F, the needles being thus allowed to project beyond the belt a suitable distance to present the eye of the'needle to the action of the grinding-wheel, as shown in Fig. 9.

The feed-roller F is supported in a casing k', castupon the end of the track-block K by a shaft f, having a fixed bearing 7c3 therein at one end, and by apivot-bolt 7a4, threaded and adjusted in the bridge-piece h5 thereon, the outer end of said shaft being secured to a pulley F', geared in a suitable manner t0 one of the belt-pulleys to move at a uniform speed therewith. The feed-roller F has peripheral grooves therein parallel with the axis of the roller and is somewhat wider than the belt l to receive the full length of the needles,which TOO are fed to it from a hopper L, supported in the mouth k2 of the casing 7a', and the middle part of the periphery of the roller F is grooved at f' to receive a spring-plate f2, secured to the track-block K to bear upon the feed-roller within said groove and deliver the needles from the said roller to the carrier-belt. If the feederoller and carrier-belt are now set in motion,the sprin g-plate f 2 will lift the needles out of the groove and press them against the belt I, the needles being then carried forward and rotated over the track by the belt, with their ends projecting therefrom to bring the eyes of the needles in contact with the grinding-wheel II, and after being ground and smoothly iinished thereby the said needles` are pushed forward over the prolongation 7,36 of the track-block and delivered from the machine.

The needles may be made in pairs with intermediate fiattened eyes and eye-seams, as shown in Fig. 8, the grinding-machine being provided with a double set of feed-bands and an intermediate vertically-moving grindingwheel, as shown in Fig.5,or the needle-blanks may be made for single needles and an intermediate grinding-wheel having its rim edges reduced in diameter to provide separate grinding-surfaces for each row of needles.

I claim as my invention and desire to secure by Letters Patent-- l. A machine for dressing the heads of needles consisting of a continuously-revolving feeding-roller provided with longitudinal recesses to receive the needles, an endless belt supported to move horizontally before the feeding -roller, and a grinding wheel placed sidewise of the belt, substantially as described.

2. In a machine for dressing the heads of needles, the combination with the framestandards, of the bed-plate, the pedestals, the main belt-pulley, the two lower supporting belt-pulleys, the belt placed in a horizontal plane, the continuously-revolving groovcd feed-roller7 the track-plate over which the belt is moved and a grinding-Wheel adapted to rotate alongside the belt, substantially as described.

3. A machine for dressing the heads of needles comprising a frame, a continuouslymoving belt running transversely across the frame, a feeding-roller arranged in front of the belt, peripheral longitudinal grooves in the roller, a hopper leading to the roller and a grinding-wheel placed sidewise of the belt, substantially as described.

4. A machine for dressing the heads of needles consisting of a continuously-revolving feeding-roller provided with longitudinal peripheral recesses to receive the needles, a hopper communicating with the roller, an endless belt supported to move horizontally in front of the feeding-roller, and a flanged grinding-Wheel placed sidewise of the belt, substantially as described.

In testimony that I claim the foregoing as my invention I have signed my name in prosence of two subscribing Witnesses.

A. SCHOENEWEISS.

Witnesses:

OTTO KNIG, l-I. T. Huss. 

